Marième Ndjim, Imène Gasmi, Fabien Herbert, Charlène Joséphine, Julie Bas, Ali Lamrani, Nathalie Coutry, Sylvain Henry, Valérie S Zimmermann, Valérie Dardalhon, Marta Campillo Poveda, Evgenia Turtoi, Steeve Thirard, Luc Forichon, Alicia Giordano, Claire Ciancia, Zeinab Homayed, Julie Pannequin, Collette Britton, Eileen Devaney, Tom N McNeilly, Sylvie Berrard, Andrei Turtoi, Rick M Maizels, François Gerbe, Philippe Jay
Upon parasitic helminth infection, activated intestinal tuft cells secrete interleukin-25 (IL-25), which initiates a type 2 immune response during which lamina propria type 2 innate lymphoid cells (ILC2s) produce IL-13. This causes epithelial remodeling, including tuft cell hyperplasia, the function of which is unknown. We identified a cholinergic effector function of tuft cells, which are the only epithelial cells that expressed choline acetyltransferase (ChAT). During parasite infection, mice with epithelial-specific deletion of ChAT had increased worm burden, fitness, and fecal egg counts, even though type 2 immune responses were comparable...
May 9, 2024: Immunity